Harden auth and outbound admin surfaces

backend/app/main.py

@@ -8,7 +8,7 @@ from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
 
 from .config import settings
-from .db import init_db
+from .db import has_admin_user, init_db
 from .routers.requests import (
     router as requests_router,
     startup_warmup_requests_cache,
@@ -165,13 +165,15 @@ def _launch_background_task(name: str, coroutine_factory: Callable[[], Awaitable
 
 
 def _log_security_configuration_warnings() -> None:
-    if str(settings.jwt_secret or "").strip() == "change-me":
+    jwt_secret = str(settings.jwt_secret or "").strip()
+    if not jwt_secret or jwt_secret == "change-me":
         logger.warning(
-            "security configuration warning: JWT_SECRET is still set to the default value"
+            "security configuration warning: JWT_SECRET is unset or still set to the default value"
         )
-    if str(settings.admin_password or "") == "adminadmin":
+    admin_password = str(settings.admin_password or "")
+    if not admin_password or admin_password == "adminadmin":
         logger.warning(
-            "security configuration warning: ADMIN_PASSWORD is still set to the bootstrap default"
+            "security configuration warning: ADMIN_PASSWORD is unset or still set to the bootstrap default"
         )
     if bool(settings.api_docs_enabled):
         logger.warning(
@@ -179,6 +181,17 @@ def _log_security_configuration_warnings() -> None:
         )
 
 
+def _enforce_secure_startup_configuration() -> None:
+    jwt_secret = str(settings.jwt_secret or "").strip()
+    if not jwt_secret or jwt_secret == "change-me":
+        raise RuntimeError("JWT_SECRET must be set to a strong, non-default value before startup.")
+    admin_password = str(settings.admin_password or "")
+    if not has_admin_user() and (not admin_password or admin_password == "adminadmin"):
+        raise RuntimeError(
+            "A secure ADMIN_PASSWORD is required on first startup until an admin account exists."
+        )
+
+
 @app.on_event("startup")
 async def startup() -> None:
     configure_logging(
@@ -192,6 +205,7 @@ async def startup() -> None:
     logger.info("startup begin app=%s build=%s", settings.app_name, settings.site_build_number)
     _log_security_configuration_warnings()
     init_db()
+    _enforce_secure_startup_configuration()
     runtime = get_runtime_settings()
     configure_logging(
         runtime.log_level,